Generally speaking, greater species diversity (alpha diversity) leads to greater ecosystem stability. This is termed the “diversity–stability hypothesis.” An ecosystem that has a greater number of species is more likely to withstand a disturbance than an ecosystem of the same size with a lower number of species.
Why is an ecosystem with higher levels of biodiversity more stable than an ecosystem with lower levels of biodiversity quizlet?
An ecosystem with a high level of species diversity such as a rainforest (high productivity) is much more stable than an ecosystem with low biodiversity such as a desert (low productivity). All ecosystems are complex and all species have a niche. … Stable ecosystems have a high biodiversity and resist change.
What are ecosystems with high biodiversity more stable than those with fewer species?
Diverse landscapes are more productive and adapt better to climate change. Summary: Ecosystems with high biodiversity are more productive and stable towards annual fluctuations in environmental conditions than those with a low diversity of species. They also adapt better to climate-driven environmental changes.
Why are populations that are more diverse more stable?
Diverse communities could maintain consistently high function because the species driving function change over time (functional turnover) or because they are more likely to contain key species with temporally stable functioning.
Why is an ecosystem with high index of diversity more favorable than the one with low index of diversity?
Greater biodiversity in ecosystems, species, and individuals leads to greater stability. For example, species with high genetic diversity and many populations that are adapted to a wide variety of conditions are more likely to be able to weather disturbances, disease, and climate change.
Why does high biodiversity create a stable ecosystem?
It has been shown that biodiversity of an area has a large impact on the ecosystem stability of that area. … This increase in complexity makes it more likely that the ecosystem will return to a stable state after a disturbance, because the ecosystem has more ways to respond to a disturbance and fix problems.
How does biodiversity increase ecosystem stability quizlet?
How can an increase in biodiversity lead to an increase in ecosystem stability? … An increase in the biodiversity of an ecosystem leads to an increase in its productivity. T. Ecosystems with greater biodiversity have an increased stability.
Why are more complex ecosystems more stable?
The reason greater stability is found in complex ecosystems is that with more complex interactions, the ability of organisms to deal with disturbances increases.
Are complex ecosystems more stable?
ECOLOGISTS have generally held that a complex ecosystem is more likely to be stable than is a simpler one. … The reason for connecting stability and complexity seems rather to have been the observation that large scale population oscillations are much more common in simple ecosystems than in complex ones2,3.
Why organism is important in maintaining the stability of ecosystem?
Living organisms change soil composition, chemical features, the composition of the atmosphere as well as the hydrosphere, oxygen-carbohydrate balance and, fmally, the structure and functions of the biosphere. They create the conditions necessary for life and ensure biosphere stability.
Which ecosystem is most stable?
The ocean is the most stable ecosystem. It is stable due to its natural liquid nature (saline), dissolved oxygen, light and temperature. Note: An environment is considered to be stable when its structure and function remain unchanged for a long period of time.
Why are some species more diverse than others?
Just why some groups contain large numbers of species while others don’t has long puzzled biologists. One of the main explanations has been geological age – older groups of organisms are more diverse because they have simply had more time to accumulate greater numbers of species.
How will increasing species diversity affect the ecosystem?
Explanation: By increasing species diversity in an ecosystem, both the efficiency and the productivity of an ecosystem will increase. A greater species richness and diversity may cause ecosystems to function more efficiently and productively by making more resources available for other species.
Why is high biodiversity advantageous over low biodiversity in maintaining the stability of an ecosystem?
1. The high biodiversity of the plant species will aid in the growth and abundance of the animal species which will feed on the plant species thus maintain stability between plant and animal species. 2. … The high biodiversity means great source of medicine, food, herbs and meat for the benefit of the human society.
Why is index of diversity better than species richness?
A community dominated by one or two species is considered to be less diverse than one in which several different species have a similar abundance. As species richness and evenness increase, so diversity increases. Simpson’s Diversity Index is a measure of diversity which takes into account both richness and evenness.
Why is index of diversity useful?
Importance: Diversity indices provide important information about rarity and commonness of species in a community. … The proportion of species i relative to the total number of species (pi) is calculated, and then multiplied by the natural logarithm of this proportion (lnpi).